8 Eminent Living Geologists — Dr. C. i). Walcott. 



1884. Paleontology of the Eureka District: Mon. U.S. Geol. Surv., viii, 

 pp. i-xiii, 1-298, pis. i-xxiv, figs. 1-6. Date on title-page 1884, 

 but received at Survey March 16, 1885.. 

 " On the Cambrian Faunas of North America : Preliminary Studies " : 

 Bull. U.S. Geol. Surv., No. 10, pp. 1-74, pis. i-x. 



1886. " Classification of the Cambrian System of North America" : Amer. 



Journ. Sci., ser. Ill, xxxii, pp. 138-57, figs. 1-9, August, 1886. 

 (Eead before National Academy of Sciences, April 23, 1886.) 

 ' ' Second Contribution to the Studies of the Cambrian Faunas of North 

 America": Bull. U.S. Geol. Surv., No. 30, pp. 1-222, pis. i-xxxiii, 

 figs. 1-10. 



1887. " Fauna of the ' Upper Taconic ' of Emmons, in Washington County, 



New York " : Amer. Journ. Sci., ser. in, xxxiv, pp. 187-99, pi. i, 

 September, 1887. 



1888. "The Taconic System of Emmons and the use of the name Taconic 



in Geologic Nomenclature " : ibid., xxxv, pp, 229-42, March, 1888 ; 

 pp. 307-27, April, 1888 ; pp. 394-401, May, 1888 ; with 13 figures 

 and a map. 

 " On the Belations and Nomenclature of Formations between the 

 Archaean and Cambrian, and the use of the term Taconic " : Congr. 

 geol. internat., Compte rendu, 4me sess., Appendix A, Reports of 

 Amer. Comm., 1891 (1888), pp. 69. 



1889. " Stratigraphic Position of the Olenellus Fauna in North America and 



Europe" : Amer. Journ. Sci., ser. Ill, xxxvii, pp. 374-92, May, 



1889 ; xxxviii, pp. 29-42, July, 1889. 

 "A Simple Method of Measuring the Thickness of Inclined Strata. " 



(Advanced print, June 11, 1889.) Proc. U.S. Nat. Mus. for 1888, 



xi, pp. 447-8. 

 " A Fossil Lingula preserving the Cast of the Peduncle." (Advanced 



print, September 3, 1889.) Ibid., p. 480. (Bead December 3, 



1887.) 



1890. " Study of a Line of Displacement in the Grand Canyon of the 



Colorado in Northern Arizona": Bull. Geol. Soc. America, i, 

 pp. 49-64, February, 1890. (Bead August 29, 1889.) 

 "The Fauna of the Lower Cambrian or Olenellus Zone": Tenth 

 Annual Beport U.S. Geol. Surv. for 1888-9, pt. i, pp. 509-774, 

 pis. lxiii-xcviii. 



1891. "Correlation Papers, Cambrian": Bull. U.S. Geol. Surv., No. 81, 



pp. 447, pis. i-iii. 

 " The North American Continent during Cambrian Time " : 12th Ann. 

 Bep. U.S. Geol. Surv. for 1890-1, pt. i, pp. 523-68, pis. xlii-v. 



1892. "Notes on the Cambrian Bocks of Pennsylvania and Maryland, from 



the Susquehanna to the Potomac " : Amer. Journ. Sci., ser. in, 



xliv, pp. 469-82, December, 1892. (Read before Philosophical 



Society of Washington October 29, 1892.) 

 1894. " Notes on the Cambrian Bocks of Pennsylvania, from the Susquehanna 



to the Delaware " : ibid., xlvii, pp. 37-41, January, 1894. 

 "Paleozoic Intra-Formational Conglomerates": Bull. Geol. Soc. 



America, v, pp. 191-8, pis. v-vii, February 5, 1894. 

 "Note on some Appendages of the Trilobites " : Proc. Biol. Soc. 



Washington, ix, pp. 89-97, pi. i, March 30, 1894. 

 " Pre-Cambrian Igneous Rocks of the Unkar Terrane, Grand Canyon 



of the Colorado, Arizona," by Charles D. Walcott; with Notes on 



the Petrographic Character of the Lavas, by Joseph P. Iddings : 



14th Ann. Rep. U.S. Geol. Surv. for 1892-3, pt. ii, pp. 497-519 



(Walcott) and 520-4 (Iddings), pis. lx-v. 

 "Geologic Time as indicated by the Sedimentary Rocks of North 



America " : Proc. Amer. Assoc. Adv. Sci., 42nd Meeting, Salem, 



pp. 129-69; Smithsonian Inst., 48th Ann. Rep., 1893 (1894), 



pp. 301-34, pi. xvi. 



